"Seventeen Going Under was blasting out of Wembley, and all the Newcastle fans were singing it"
He also changed his lyrics to ‘Little Bit Closer’ to give a nod to Dan Burn
They join previously announced acts like Sam Fender and Blossoms
"I think we've been celebrating since we got asked to do it. We're on cloud nine all the time"
The singer-songwriter also gave numerous ‘People Watching’ tracks their live debuts
While talking to NME at the BRITs, she also opened up about new music coming “very soon” and an upcoming tour with Sam Fender
He added that Charli XCX, who took home the most awards last night (March 1), "deserves her flowers"
He picked up the award for Best Alternative/Rock Act, following the release of his new album 'People Watching'
The ceremony went down in London's O2 Arena on Saturday night (March 1)
Fender is only the ninth artist this decade to sell over 100,000 units of an album in its opening week as it hits Number One